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adv7511 Source Product Description Infoframe (SPD)

Question asked by mbu on Apr 2, 2014
Latest reply on Sep 4, 2014 by mattp

Hi.

 

I have tried (most for fun) to enable the SDP infoframe in the adv7511 but no success.

 

The adv7511 is running in HDMI mode with AVI infoframes and working audio.

I program the packet memory with an SPD frame (which I think is valid)

Starting from address 0x00 in packet memory:

3 1 25 70 70 70 70 0 0 0 0 80 80 80 80 0

 

And enable SPD in main map by setting reg 0x40 to 0x40

 

What happens now is that Audio is muted but no SPD frame is received. It almost looks like the

data set in the packet memory affects the audio infoframe ?

 

I use an adv7842 as receiver (where I can receive SPD frames from an quantum HDMI data generator)

Unfortunately do I not have an HDMI analyzer which can detect SPD frames.

 

Do you have an example setup for sending SPD frames ?

 

Martin

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